Staff Full-Stack Software Engineer

Posted Yesterday
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Athens
Senior level
Other
The Role
As a Staff Full-Stack Software Engineer, you will lead API development, tackle technical challenges, and guide the team through the API lifecycle, focusing on quality and architectural decisions while adapting to a fast-paced environment.
Summary Generated by Built In

📍Location: Greece

🏙️ Office requirement: Remote/ Flexible-first

📝 Employment type: Permanent/ Employee

📝 Linkedin Seniority Level: Mid/ Senior 

At GWI we’re always looking for extraordinary people who thrive on making an extraordinary impact. Right now we’re looking for a Staff Full-Stack Software Engineer to play a key role in our Platform team in our Software Engineering in Athens. If that’s you, and making a difference gets you out of bed in the morning, keep reading. It could be the start of something, well, extraordinary.


Sounds great, what will I be doing? 🤔

As our Staff Engineer you’ll lead the development of APIs that drive seamless client experiences and integrations of GWI data across platforms. You’ll tackle complex technical challenges, guide the team through the entire API lifecycle, and make key architectural decisions, all while working with technologies like Go, React, Typescript, and Google Cloud.

It’s also fun; shaking things up is what working for a growing company is all about. So you’ll need to be flexible, comfortable with continuous change, and working in a high-tempo environment as we grow.


What do I need to bring with me? 🧳

You’ll need to be able to demonstrate the core skills this role requires. You don't have to tick all the boxes right away; the important thing is that you’re willing to learn. Here’s what the team will be looking for:

👉 Proven experience coding with Go, Java/C#, Ruby, Node.js, and working with frontend frameworks like React or Angular.

👉 Strong software development skills, with expertise in concurrency patterns, modular design, and optimizing client-facing APIs.

👉 In-depth knowledge of API design principles (authentication, versioning, error handling, security), with a focus on quality through Test Driven Development (TDD).

👉 Familiarity with continuous integration, deployment automation, and Agile methodologies (e.g., JIRA, Git), with flexibility to adapt to evolving requirements.
👉 Significant experience with Test Driven Development (TDD), ensuring high-quality, reliable API code.

👉 Solid knowledge and hands-on experience with continuous integration and deployment automation concepts.

👉 Ability to propose and drive architectural decisions that meet both client needs and business objectives.

👉 Experience integrating LLMs for natural language processing or AI-driven tasks is a plus.

👉 Excellent written and spoken English communication skills.

Equally important is attitude. We want people who think big (to make an impact), ask why (to find a better way), and show respect (to everyone, at every level, all the time). Those are our values, exemplified by our leadership team, and they’re a big part of what we’re looking for in you.


Interview steps 👟

👉 Preliminary phone call with the Talent Team (no video required)

👉 Technical task in Github 

👉 Second (and final*) video interview with the hiring panel, discussing the task, followed by a values conversation with members of the wider GWI community.

*Don’t be alarmed if there are other stages in the process, it’s all part of the plan for some of our roles.


What exactly is GWI? 👀

GWI is modernized consumer research; global, on-demand, and accessible to everyone, not just data experts. Our platform is designed for companies looking for fresh and insightful data about their consumers’ values, purchase journeys, media usage, and social media habits. 

With data representing the views of nearly 3 billion people across 52+ countries, GWI has become the go-to for agencies, brands, and media companies that want to know what really drives their audience to action.

Since launching in 2009 we’ve grown at a healthy pace, and to maintain this growth we need more extraordinary people. Hence this ad. Hence you.


What’s in it for me? 🎁

You’ll do the sort of work that got you excited about your career in the first place - not as a cog in a machine, but as an individual whose contribution matters. So gigantic job satisfaction comes as standard, but it’s only part of the package. You’ll also get: 

Global benefits 🌎: 

🌴 Tons of days off: 25 days annual leave | End-of-year office closures 

💸 More than a great salary: Employee share scheme | Private health insurance

🧘 Great work-life balance: Flexitime | Early Friday finishes | Work-from-anywhere options | ‘Work from home’ budget

🏡 Family-focused flexibility: Carer days | Enhanced parental leave | Private insurance for your family

💪 A commitment to YOU: Accredited learning programs | A commitment to mental and physical health | Reward and recognition programs | Career development opportunities

💛 A commitment to the community: DE&I committee | Volunteer options | 100% donation matching | Payroll giving options

Location-specific benefits 🇬🇷:

💲 Employee share scheme/options

🎓 Generous training budget, including a fully paid international conference each year for Engineering and Data Science roles

📱 Mobile phone contract and restaurant ticket options 

🏥 Private health insurance plan

Put all that together and GWI is the friendliest, most fulfilling place any of us has ever worked.


Diversity, Equity & Inclusion

We take DE&I seriously. Not only is it obviously the right thing to do, it’s also the bedrock of our value of show respect and at the heart of our company culture.

We’re a global data business, so it’s essential our data reflects the global reality. Putting diversity into practice like this literally makes our business stronger. That’s why we strive to make our offices - and our teams - as diverse as our data. Want to know more? Take a look at our Life page on LinkedIn to learn more about our DE&I initiatives. The point is, GWI is a place where you can genuinely feel at home, express yourself, and make your mark - whoever you are.

As a Disability Confident employer, we encourage applications from disabled candidates and are dedicated to providing all relevant assistance during the application and interview process.

We also encourage individuals from all backgrounds, including those from underrepresented and marginalized communities, to join our team.

#li-hybrid


Top Skills

Angular
C#
Go
Java
Node.js
React
Ruby
Typescript
The Company
HQ: New York, NY
679 Employees
On-site Workplace
Year Founded: 2009

What We Do

We’re the target audience company that does things a bit differently. Our job is to cut through the noise and give you facts you can trust. Our flagship study represents more than 2 billion people around the world, and it tells you how consumers are changing; their actions, ideals, perceptions, feelings... (you get the gist).

The world’s largest (and smallest) brands, marketing agencies and media organizations rely on us every day to help them stand out. Working with the likes of Twitter, Google, Spotify, WPP, IPG and Omnicom Group, we help them find really original and in-depth insights through our one-of-a-kind platform.

And if that doesn’t float your boat, we’ve got a whole bunch of custom services to let you do more tailored research across 48 countries – asking whoever you want, whatever you want.

We’re growing fast, and we’re always on the lookout for out-of-the-box thinkers to help us do more great things.

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